North Hessary Tor transmitting station

North Hessary Tor
North Hessary Tor
Caradon Hill
Mast height 196 metres (643 ft)
Coordinates 50°33′01″N 4°00′30″W / 50.5503°N 4.0083°W / 50.5503; -4.0083Coordinates: 50°33′01″N 4°00′30″W / 50.5503°N 4.0083°W / 50.5503; -4.0083
Grid reference SX578742
Built 1955
Relay of Caradon Hill
BBC region BBC South West
ITV region ITV Westcountry
Mast with worker at base

Situated on the summit of North Hessary Tor in Devon, England is an FM radio and television transmitter which uses as aerial a 196 metres (643 ft) high guyed mast. It was built by the BBC in 1955 when a transmitter was needed to introduce 405 line television into Devon. It now carries a small UHF TV transmitter which serves Princetown and Dartmoor. FM radio transmissions began in 1956 and cover most of Devon and eastern parts of Cornwall. It is owned and operated by Arqiva.

Mast and base station

Services listed by frequency

Analogue radio (FM VHF)

Frequency kW Service
88.1 MHz 160 BBC Radio 2
90.3 MHz 160 BBC Radio 3
92.5 MHz 160 BBC Radio 4
97.7 MHz 160 BBC Radio 1
100.0 MHz 160 Classic FM
103.4 MHz 15 BBC Radio Devon

Digital radio (DAB)

Frequency Block kW Operator
225.648 MHz 12B 3.2 BBC National DAB

Analogue television

17 December 1954 - 3 January 1985

Frequency VHF kW Service
51.75 MHz 2 15 BBC1

Until 12 August 2009

Frequency UHF kW Service
743.25 MHz 55 0.012 BBC One
775.25 MHz 59 0.012 ITV1
799.25 MHz 62 0.012 BBC Two
823.25 MHz 65 0.012 Channel 4

Analogue and digital television

12 August 2009 - 9 September 2009

Frequency UHF kW Service System
743.25 MHz 55 0.012 BBC One PAL System I
775.25 MHz 59 0.012 ITV1 PAL System I
801.833 MHz 62 0.0025 BBC A DVB-T
823.25 MHz 65 0.012 Channel 4 PAL System I

Digital television

9 September 2009 - June 2013

Frequency UHF kW Operator System
746.000 MHz 55 0.0025 BBC B DVB-T2
778.000 MHz 59 0.0025 Digital 3&4 DVB-T
801.833 MHz 62- 0.0025 BBC A DVB-T

From June 2013

In June 2013, BBC A moved from UHF 62- to UHF 50, to allow for the clearance of the 800 MHz band for 4G LTE mobile services.

Frequency UHF kW Operator System
706.000 MHz 50 0.0025 BBC A DVB-T
746.000 MHz 55 0.0025 BBC B DVB-T2
778.000 MHz 59 0.0025 Digital 3&4 DVB-T

See also

References

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